fhProcess2: Second stage of Fire history processing for FAME

In nevilamos/FAMEFMR: Functions For DELWP FAME Fire Analysis

Second stage of Fire history processing for FAME

Description

Takes the results of the main FH process function and calculates Time Since fire (TSF) and Last Fire Type (LFT) and Last burnt year (LBY) for each SEASON as defined in the input arguments, these values are appended to the output sf polygon dataframe.

Usage

fhProcess2(inFH1, start.SEASON = NULL, end.SEASON = NULL, max_interval = 0)

Arguments

inFH1	input partially processed Fire History from
start.SEASON	first season for which output is wanted (four digit year as integer), if NUll then second season in in history is used (cannot use first season because it has no interval, this may still fail if there is no overlap)
end.SEASON	last season required, if NULL then maximum value in fire history scenario used
max_interval	maximum inter fire interval after a HIGH fire for which subsequent fire is reassigned to HIGH, if 0 then no reassignment)

Value

A list containing:

• OutDF A completed Fire Analysis Simple feature collection of polygons and/or multipolygons with columns for Fire Season sequences, inter-fire intervals Last fire type,last fire SEASON and last burned SEASON for each season selected in the input range.

• TimeSpan integer vector sequence of SEASONS to include in the analysis output

• YSFNames names of TSF years in output, needed by downstream functions

• LBYNames names of LBY years in output, needed by downstream functions

• LFTNames names of LBY years in output, needed by downstream functions

Examples

# randomFH<-generate_random_fire_history(20)
# plot(randomFH)
# outFH1<-fhProcess1(randomFH)
# plot(outFH1)
# #complete all fields in FH analysis
# outFH2<-fhProcess2(outFH1)
#
# plot(outFH2$OutDF,max.plot = 20)

nevilamos/FAMEFMR documentation built on April 17, 2025, 9:32 p.m.